1
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Choudhary S, Gayyur, Mandal A, Patra A, Kant R, Ghosh N. Copper/Zinc-Catalyzed Stitching of 2-Carbonylanilines with Bis(ynamides): Access to Pyrrolo[2,3- b]quinolines and Its Photophysical Studies. J Org Chem 2024; 89:6274-6280. [PMID: 38642061 DOI: 10.1021/acs.joc.4c00267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2024]
Abstract
Herein, a one-pot desulfonylative protocol enabled by copper(II)/zinc(II) salts to access pyrrolo[2,3-b]quinolines in good to excellent yields from 2-carbonylanilines and ynamide-derived buta-1,3-diynes has been reported. Significantly, various 2-carbonylanilines carrying reactive functional groups are well tolerated. Moreover, a gram-scale synthesis and synthetic application highlight the practical utility of the current protocol. Notably, the fluorescence properties of pyrrolo[2,3-b]quinolines have been recorded, and their potential use as a fluorescent probe in the imaging of live cells has been demonstrated.
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Affiliation(s)
- Shivani Choudhary
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Gayyur
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India
| | - Arnab Mandal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Abhijit Patra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Ruchir Kant
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India
| | - Nayan Ghosh
- Medicinal & Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
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2
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Dubart A, Evano G. Divergent Synthesis of α-Fluorinated Carbonyl and Carboxyl Derivatives by Double Electrophilic Activation of Amides. Org Lett 2021; 23:8931-8936. [PMID: 34709828 DOI: 10.1021/acs.orglett.1c03450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A straightforward and divergent entry to α-fluorinated carbonyl and carboxyl derivatives is reported. Upon activation of amides with triflic anhydride and a 2-halo-pyridine and subsequent trapping of the resulting keteniminium ions with nucleophiles followed by a second electrophilic activation with NFSI and final hydrolysis, a range of amides can be transformed to α-fluorinated ketones, esters, and amides under mild conditions. Moreover, this reaction can be performed to yield enantioenriched products with a traceless chiral auxiliary.
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Affiliation(s)
- Amaury Dubart
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
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3
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Thilmany P, Guarnieri-Ibáñez A, Jacob C, Lacour J, Evano G. Straightforward Synthesis of Indenes by Gold-Catalyzed Intramolecular Hydroalkylation of Ynamides. ACS ORGANIC & INORGANIC AU 2021; 2:53-58. [PMID: 36855401 PMCID: PMC9954284 DOI: 10.1021/acsorginorgau.1c00021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An original and straightforward entry to polysubstituted indenes from readily available ynamides is reported. Upon reaction with a N-heterocyclic carbene-gold complex under mild conditions, activated keteniminium ions are generated whose unique electrophilicity triggers a [1,5]-hydride shift and a subsequent cyclization. The presence of an endocyclic enamide in the densely functionalized resulting indenes was shown to be especially useful and versatile, offering a range of opportunities for their further postfunctionalization.
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Affiliation(s)
- Pierre Thilmany
- Laboratoire
de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Alejandro Guarnieri-Ibáñez
- Department
of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
| | - Clément Jacob
- Laboratoire
de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium,Organic
Synthesis Division, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Jérôme Lacour
- Department
of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
| | - Gwilherm Evano
- Laboratoire
de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium,
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4
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Sander S, Müller R, Ahrens M, Kaupp M, Braun T. Platinum Indolylphosphine Fluorido and Polyfluorido Complexes: An Interplay between Cyclometallation, Fluoride Migration, and Hydrogen Bonding. Chemistry 2021; 27:14287-14298. [PMID: 34337795 PMCID: PMC8596594 DOI: 10.1002/chem.202102451] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Indexed: 11/06/2022]
Abstract
The reaction of [PtCl2 (COD)] (COD=1,5-cyclooctadiene) with diisopropyl-2-(3-methyl)indolylphosphine (iPr2 P(C9 H8 N)) led to the formation of the platinum(ii) chlorido complexes, cis-[PtCl2 {iPr2 P(C9 H8 N)}2 ] (1) and trans-[PtCl2 {iPr2 P(C9 H8 N)}2 ] (2). The cis-complex 1 reacted with NEt3 yielding the complex cis-[PtCl{κ2 -(P,N)-iPr2 P(C9 H7 N)}{iPr2 P(C9 H8 N)}] (3) bearing a cyclometalated κ2 -(P,N)-phosphine ligand, while the isomer 2 with a trans-configuration did not show any reactivity towards NEt3 . Treatment of 1 or 3 with (CH3 )4 NF (TMAF) resulted in the formation of the twofold cyclometalated complex cis-[Pt{κ2 -(P,N)-iPr2 P(C9 H7 N)}2 ] (4). The molecular structures of the complexes 1-4 were determined by single-crystal X-ray diffraction. The fluorido complex cis-[PtF{κ2 -(P,N)-iPr2 P(C9 H7 N)}{iPr2 P(C9 H8 N)}] ⋅ (HF)4 (5 ⋅ (HF)4 ) was formed when complex 4 was treated with different hydrogen fluoride sources. The Pt(ii) fluorido complex 5 ⋅ (HF)4 exhibits intramolecular hydrogen bonding in its outer coordination sphere between the fluorido ligand and the NH group of the 3-methylindolyl moiety. In contrast to its chlorido analogue 3, complex 5 ⋅ (HF)4 reacted with CO or the ynamide 1-(2-phenylethynyl)-2-pyrrolidinone to yield the complexes trans-[Pt(CO){κ2 -(P,C)-iPr2 P(C9 H7 NCO)}{iPr2 P(C9 H8 N)}][F(HF)4 ] (7) and a complex, which we suggest to be cis-[Pt{C=C(Ph)OCN(C3 H6 )}{κ2 -(P,N)-iPr2 P(C9 H7 N)}{iPr2 P(C9 H8 N)}][F(HF)4 ] (9), respectively. The structure of 9 was assigned on the basis of DFT calculations as well as NMR and IR data. Hydrogen bonding of HF and NH to fluoride was proven to be crucial for the existence of 7 and 9.
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Affiliation(s)
- Stefan Sander
- Department of ChemistryHumboldt-Universität zu BerlinBrook-Taylor-Str. 212489BerlinGermany
| | - Robert Müller
- Institut für ChemieTechnische Universität Berlin, Theoretische Chemie/Quantenchemie, Sekr.C7Straße des 17. Juni 13510623BerlinGermany
| | - Mike Ahrens
- Department of ChemistryHumboldt-Universität zu BerlinBrook-Taylor-Str. 212489BerlinGermany
| | - Martin Kaupp
- Institut für ChemieTechnische Universität Berlin, Theoretische Chemie/Quantenchemie, Sekr.C7Straße des 17. Juni 13510623BerlinGermany
| | - Thomas Braun
- Department of ChemistryHumboldt-Universität zu BerlinBrook-Taylor-Str. 212489BerlinGermany
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5
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Lenko I, Mamontov A, Alayrac C, Legay R, Witulski B. Media‐Driven Pd‐Catalyzed Reaction Cascades with 1,3‐Diynamides Leading Selectively to Either Indoles or Quinolines. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Illia Lenko
- Laboratoire de Chimie Moléculaire et Thio-organique CNRS UMR 6507 ENSICAEN & UNICAEN Normandie Univ. 6 Bvd Maréchal Juin 14050 Caen France
| | - Alexander Mamontov
- Laboratoire de Chimie Moléculaire et Thio-organique CNRS UMR 6507 ENSICAEN & UNICAEN Normandie Univ. 6 Bvd Maréchal Juin 14050 Caen France
| | - Carole Alayrac
- Laboratoire de Chimie Moléculaire et Thio-organique CNRS UMR 6507 ENSICAEN & UNICAEN Normandie Univ. 6 Bvd Maréchal Juin 14050 Caen France
| | - Rémi Legay
- Laboratoire de Chimie Moléculaire et Thio-organique CNRS UMR 6507 ENSICAEN & UNICAEN Normandie Univ. 6 Bvd Maréchal Juin 14050 Caen France
| | - Bernhard Witulski
- Laboratoire de Chimie Moléculaire et Thio-organique CNRS UMR 6507 ENSICAEN & UNICAEN Normandie Univ. 6 Bvd Maréchal Juin 14050 Caen France
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6
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Lenko I, Mamontov A, Alayrac C, Legay R, Witulski B. Media-Driven Pd-Catalyzed Reaction Cascades with 1,3-Diynamides Leading Selectively to Either Indoles or Quinolines. Angew Chem Int Ed Engl 2021; 60:22729-22734. [PMID: 34411395 DOI: 10.1002/anie.202110221] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Indexed: 11/10/2022]
Abstract
Divergent Pd-catalyzed reaction cascades with various 1,3-diynamides yielding either 2-amino-3-alkynylindoles or 2-amino-4-alkenylquinolines were established. Omitting or adding TBAF (tetrabutylammonium fluoride) to the reaction of N,N-(2-iodophenyl)(4-toluenesulfonyl)-1,3-diynamides with secondary or primary amines in the presence of KOH in THF and catalytic amounts of Pd(PPh3 )4 completely changed the outcome of the reaction. In the absence of TBAF, 2-amino-3-alkynylindoles were the sole products, while the presence of TBAF switched the product formation to 2-amino-4-alkenylquinolines. Deuterium labeling proceeded selectively at the C3 and C11 positions of the 2-amino-4-alkenylquinoline products and this suggests the unprecedented formation of [4]cumulenimines from 1,3-diynamides as reactive key intermediates.
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Affiliation(s)
- Illia Lenko
- Laboratoire de Chimie Moléculaire et Thio-organique, CNRS UMR 6507, ENSICAEN & UNICAEN, Normandie Univ., 6 Bvd Maréchal Juin, 14050, Caen, France
| | - Alexander Mamontov
- Laboratoire de Chimie Moléculaire et Thio-organique, CNRS UMR 6507, ENSICAEN & UNICAEN, Normandie Univ., 6 Bvd Maréchal Juin, 14050, Caen, France
| | - Carole Alayrac
- Laboratoire de Chimie Moléculaire et Thio-organique, CNRS UMR 6507, ENSICAEN & UNICAEN, Normandie Univ., 6 Bvd Maréchal Juin, 14050, Caen, France
| | - Rémi Legay
- Laboratoire de Chimie Moléculaire et Thio-organique, CNRS UMR 6507, ENSICAEN & UNICAEN, Normandie Univ., 6 Bvd Maréchal Juin, 14050, Caen, France
| | - Bernhard Witulski
- Laboratoire de Chimie Moléculaire et Thio-organique, CNRS UMR 6507, ENSICAEN & UNICAEN, Normandie Univ., 6 Bvd Maréchal Juin, 14050, Caen, France
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7
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Lecomte M, Lahboubi M, Thilmany P, El Bouzakhi A, Evano G. A general, versatile and divergent synthesis of selectively deuterated amines. Chem Sci 2021; 12:11157-11165. [PMID: 34522313 PMCID: PMC8386668 DOI: 10.1039/d1sc02622d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 06/23/2021] [Indexed: 11/21/2022] Open
Abstract
Deuterated organic molecules are of utmost importance in many areas of science and have been recently intensively investigated in medicinal chemistry due to their enhanced metabolic stability. The development of efficient and broadly applicable methods for the selective incorporation of deuterium atoms into organic molecules from readily available starting materials and reagents is therefore of extreme importance. Such methods however often lack generality and selectivity, notably in the nitrogen series. With nitrogen-containing molecules being indeed ubiquitous in medicinal chemistry, there is a strong need for efficient methods enabling the selective synthesis of deuterated amines. In this perspective, we report herein a general, versatile, divergent and metal-free synthesis of amines selectively deuterated at their α and/or β positions. Upon simple treatment of readily available ynamides with a mixture of triflic acid and triethylsilane, either deuterated or not, a range of amines can be smoothly obtained with high levels of deuterium incorporation by a unique sequence involving a domino keteniminium/iminium activation. A general, versatile, divergent and metal-free synthesis of amines selectively deuterated at their α and/or β positions and relying on a simple treatment of ynamides with triflic acid and triethylsilane, either deuterated or not, is reported.![]()
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Affiliation(s)
- Morgan Lecomte
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
| | - Mounsef Lahboubi
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
| | - Pierre Thilmany
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
| | - Adil El Bouzakhi
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
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8
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9
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Yang XH, Huang J, Wang F, Liu Z, Li Y, Tao CA, Wang J. Copper-catalyzed alkynylation/annulation cascades of N-allyl ynamides: regioselective access to medium-sized N-heterocycles. Org Chem Front 2021. [DOI: 10.1039/d0qo00837k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A synthetic strategy based on sequential application of aza-Claisen rearrangement, C–H functionalization, C–N coupling and cyclization as key steps has been developed for the synthesis of 6-, 7-, 8-, and 9-membered rings N-heterocycles.
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Affiliation(s)
- Xu-Heng Yang
- College of Liberal Arts and Science
- National University of Defense Technology
- Changsha 410073
- China
| | - Jian Huang
- College of Liberal Arts and Science
- National University of Defense Technology
- Changsha 410073
- China
| | - Fang Wang
- College of Liberal Arts and Science
- National University of Defense Technology
- Changsha 410073
- China
| | - Zhuoliang Liu
- College of Liberal Arts and Science
- National University of Defense Technology
- Changsha 410073
- China
| | - Yujiao Li
- College of Liberal Arts and Science
- National University of Defense Technology
- Changsha 410073
- China
| | - Cheng-an Tao
- College of Liberal Arts and Science
- National University of Defense Technology
- Changsha 410073
- China
| | - Jianfang Wang
- College of Liberal Arts and Science
- National University of Defense Technology
- Changsha 410073
- China
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10
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Jordan A, Stoy P, Sneddon HF. Chlorinated Solvents: Their Advantages, Disadvantages, and Alternatives in Organic and Medicinal Chemistry. Chem Rev 2020; 121:1582-1622. [DOI: 10.1021/acs.chemrev.0c00709] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Andrew Jordan
- GlaxoSmithKline Carbon Neutral Laboratory for Sustainable Chemistry, Jubilee Campus, University of Nottingham, 6 Triumph Road, Nottingham NG7 2GA, U.K
| | - Patrick Stoy
- Drug Design and Selection, Platform and Technology Sciences, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Helen F. Sneddon
- GSK, Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
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11
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Lynch CC, Sripada A, Wolf C. Asymmetric synthesis with ynamides: unique reaction control, chemical diversity and applications. Chem Soc Rev 2020; 49:8543-8583. [PMID: 33073285 PMCID: PMC8383824 DOI: 10.1039/d0cs00769b] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ynamides are among the most powerful building blocks in organic synthesis and have become invaluable starting materials for the construction of multifunctional compounds and challenging architectures that would be difficult to prepare otherwise. The rapidly growing popularity originates from the unique reactivity and ease of manipulation of the polarized ynamide triple bond, the advance of practical methods for making them, and the simplicity of storage and handling. These attractive features and the demonstration of numerous synthetic applications have spurred the development of intriguing asymmetric reaction strategies during the last decade. An impressive variety of chemo-, regio- and stereoselective carbon-carbon and carbon-heteroatom bond forming reactions with ynamides have been developed and now significantly enrich the toolbox of synthetic chemists. This review provides a comprehensive overview of asymmetric ynamide chemistry since 2010 with a focus on the general scope, current limitations, stereochemical reaction control and mechanistic aspects.
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Affiliation(s)
- Ciarán C Lynch
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, USA.
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12
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Abstract
Over the past two decades, the development and application of ynamide chemistry have received more and more attention. Ynamides have proven to be versatile reagents for organic synthesis, and have been widely applied to the rapid assembly of a diverse range of structurally complex N-containing molecules, especially the valuable N-heterocycles. In comparison with the well-established transition metal-catalyzed reactions of ynamides, metal-free ynamide transformations have relatively seldom been exploited. Recently, Brønsted acid-mediated reactions of ynamides represent significant advances in ynamide chemistry. This review summarizes the latest trends and developments of Brønsted acid-mediated reactions of ynamides, including cycloaddition, cyclization, intramolecular alkoxylation-initiated rearrangement, oxygen atom transfer reactions and hydro-heteroatom addition reactions.
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Affiliation(s)
- Yang-Bo Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
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13
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Garkhedkar AM, Chiang Y, Senadi GC, Wang J, Hu W. DBU‐Promoted Synthesis of 1,3‐Benzoxazines from Geminal Dibromo Olefins: Applications to the Construction of
o
‐Amido Phenacyl Bromides. ChemistrySelect 2020. [DOI: 10.1002/slct.202000667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Amol Milind Garkhedkar
- Department of Medicinal and Applied ChemistryKaohsiung Medical University No. 100, Shiquan 1st Rd Sanmin District Kaohsiung City 807 Taiwan
| | - Ya‐Chi Chiang
- Department of Medicinal and Applied ChemistryKaohsiung Medical University No. 100, Shiquan 1st Rd Sanmin District Kaohsiung City 807 Taiwan
| | - Gopal Chandru Senadi
- Department of Medicinal and Applied ChemistryKaohsiung Medical University No. 100, Shiquan 1st Rd Sanmin District Kaohsiung City 807 Taiwan
| | - Jeh‐Jeng Wang
- Department of Medicinal and Applied ChemistryKaohsiung Medical University No. 100, Shiquan 1st Rd Sanmin District Kaohsiung City 807 Taiwan
- Department of Medical ResearchKaohsiung Medical University Hospital No. 100, Tzyou 1st Rd Sanmin District Kaohsiung City 807 Taiwan
| | - Wan‐Ping Hu
- Department of BiotechnologyKaohsiung Medical University No. 100, Shiquan 1st Rd Sanmin District Kaohsiung City 807 Taiwan
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14
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Dwadnia N, Lingua H, Mouysset D, Mimoun L, Siri D, Bertrand MP, Feray L. Intermolecular Addition of Carbon-Centered Radicals to Ynamides. A Regio- and Stereoselective Route to Persubstituted α-Iodo-enamides. J Org Chem 2020; 85:4114-4121. [PMID: 32069414 DOI: 10.1021/acs.joc.9b03255] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Rather surprisingly, C-C bond formation through "intermolecular" radical addition to internal ynamides has never been reported. Actually, ynamides are excellent acceptors for "electrophilic" carbon-centered radicals. These processes enable the introduction of functionalized alkyl chains at Cβ, groups that have not yet been introduced via the addition of organometallics. Radical carboiodination affords persubstituted α-iodo-enamides in moderate to high yield. The addition is totally stereoselective. Theoretical support to the mechanism and the scope and limitation of the reaction are discussed.
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Affiliation(s)
- Nejib Dwadnia
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Hugo Lingua
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Dominique Mouysset
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Liliane Mimoun
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Didier Siri
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Michèle P Bertrand
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Laurence Feray
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
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15
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Ramirez M, Li W, Lam YH, Ghosez L, Houk KN. Mechanisms and Conformational Control of (4 + 2) and (2 + 2) Cycloadditions of Dienes to Keteniminium Cations. J Org Chem 2020; 85:2597-2606. [PMID: 31917921 DOI: 10.1021/acs.joc.9b03340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Selectivities in (4 + 2) and (2 + 2) cycloadditions of keteniminium cations with 1,3-dienes studied experimentally by Ghosez et al. were explored with ωB97X-D density functional theory. Reactions of keteniminium cations with 1,3-dienes are influenced by the s-cis or s-trans nature of the diene. s-Trans dienes react to give an intermediate enamine that leads to favored formation of (2 + 2) cycloadducts across the keteniminium C-C bond. The first step of the cycloaddition is rate-determining, and reaction occurs by attack on the central carbon of the keteniminium cation and subsequent C-C bond formation. In contrast, s-cis constrained dienes lead to preferential formation of (4 + 2) products by both stepwise and concerted mechanisms involving regioselective addition to the keteniminium C-N bond. Diels-Alder reaction occurs via a concerted mechanism if the diene termini are held in close proximity, as in cyclopentadiene.
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Affiliation(s)
- Melissa Ramirez
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Wenfei Li
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Yu-Hong Lam
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Léon Ghosez
- European Institute of Chemistry and Biology (IECB), CBMN UMR 5248 , Université de Bordeaux , rue Robert Escarpit , FR-33607 Pessac , France
| | - K N Houk
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
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16
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Tanriver G, Dagoneau D, Karadeniz U, Kolleth A, Lumbroso A, Sulzer-Mossé S, De Mesmaeker A, Catak S. Keteniminium Salts: Reactivity and Propensity toward Electrocyclization Reactions. J Org Chem 2020; 85:449-463. [PMID: 31790586 DOI: 10.1021/acs.joc.9b02466] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A predictive computational study was conducted in order to assess the efficiency of electrocyclization reactions of keteniminium salts, in an effort to form a variety of heterocyclic systems, namely, 3-amino(benzo)thiophenes, 3-amino(benzo)furans, 3-aminopyrroles, as well as 3-aminoindoles. A density functional theory (DFT) approach was utilized and the effect of heteroatoms (NMe, O, S) was thoroughly investigated by means of population analysis, QTAIM, NICS, ACID, and local reactivity descriptors (Parr and Fukui functions). The electrocyclization of enamines leading to 3-aminopyrroles was shown to be both kinetically and thermodynamically most favorable. Moreover, the pericyclic nature of the electrocyclizations was confirmed using FMO, QTAIM, NICS, and ACID methods. Additionally, substituent effects were investigated in order to give further insight on the reactivity of heteroatom containing keteniminium systems toward electrocyclization reactions. Finally, computational predictions were experimentally confirmed for a selection of keteniminium systems.
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Affiliation(s)
- Gamze Tanriver
- Department of Chemistry , Bogazici University , Bebek, 34342 Istanbul , Turkey
| | - Dylan Dagoneau
- Crop Protection Research, Research Chemistry , Syngenta Crop Protection AG , Schaffhauserstrasse 101 , CH-4332 Stein , Switzerland
| | - Ulfet Karadeniz
- Department of Chemistry , Bogazici University , Bebek, 34342 Istanbul , Turkey
| | - Amandine Kolleth
- Crop Protection Research, Research Chemistry , Syngenta Crop Protection AG , Schaffhauserstrasse 101 , CH-4332 Stein , Switzerland
| | - Alexandre Lumbroso
- Crop Protection Research, Research Chemistry , Syngenta Crop Protection AG , Schaffhauserstrasse 101 , CH-4332 Stein , Switzerland
| | - Sarah Sulzer-Mossé
- Crop Protection Research, Research Chemistry , Syngenta Crop Protection AG , Schaffhauserstrasse 101 , CH-4332 Stein , Switzerland
| | - Alain De Mesmaeker
- Crop Protection Research, Research Chemistry , Syngenta Crop Protection AG , Schaffhauserstrasse 101 , CH-4332 Stein , Switzerland
| | - Saron Catak
- Department of Chemistry , Bogazici University , Bebek, 34342 Istanbul , Turkey
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17
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Habert L, Diachenko I, Gillaizeau I. Rapid synthesis of 3-amino-1 H-isochromene from ortho-ynamidyl het(aryl) aldehyde derivatives. RSC Adv 2020; 10:9934-9939. [PMID: 35498568 PMCID: PMC9050208 DOI: 10.1039/d0ra00768d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 03/02/2020] [Indexed: 01/18/2023] Open
Abstract
A simple and original efficient synthesis of 3-amino-1H-isochromene bearing a bromine atom at the C-1 position via a 6-endo-cyclization approach from in situ generated ortho-ynamidyl het(aryl) aldehyde derivatives is achieved under mild reaction conditions and with good yields. Original ortho-ynamidyl benzaldehyde compounds were also successfully obtained. Fast synthesis of 3-amino-1H-isochromene from in situ generated ortho-ynamidyl het(aryl) aldehyde derivatives.![]()
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Affiliation(s)
- Loïc Habert
- Institute of Organic and Analytical Chemistry
- ICOA
- UMR 7311
- CNRS
- Université d'Orléans, rue de Chartres
| | - Iryna Diachenko
- Institute of Organic and Analytical Chemistry
- ICOA
- UMR 7311
- CNRS
- Université d'Orléans, rue de Chartres
| | - Isabelle Gillaizeau
- Institute of Organic and Analytical Chemistry
- ICOA
- UMR 7311
- CNRS
- Université d'Orléans, rue de Chartres
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18
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Sawano E, Ogasawara M. Palladium-Catalyzed Three-Component Coupling of 1,1-Dibromoalkenes, Vinylzinc Chloride, and Soft Nucleophiles: One-Pot Synthesis of 1,3-Disubstituted Allenes. ACS OMEGA 2019; 4:19499-19504. [PMID: 31763575 PMCID: PMC6868900 DOI: 10.1021/acsomega.9b03444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
The three-component coupling reaction of 1,1-dibromoalkenes 1, vinylzinc chloride 2, and carbon soft nucleophiles 3 was realized in the presence of the catalytic palladium/Xantphos species, and 1,3-disubstituted allenic products 5 were obtained in yields of up to 77%. The successive two palladium-catalyzed processes, namely the cross-coupling reaction and the allylic substitution, assembled 5 from the easily accessible starting compounds.
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Affiliation(s)
- Eri Sawano
- Department
of Natural Science, Graduate School of Science and Technology and
Research Cluster on “Innovative Chemical Sensing”, Tokushima University, Tokushima 770-8506, Japan
- Graduate
School of Life Science, Hokkaido University, Kita-ku, Sapporo 001-0021, Japan
| | - Masamichi Ogasawara
- Department
of Natural Science, Graduate School of Science and Technology and
Research Cluster on “Innovative Chemical Sensing”, Tokushima University, Tokushima 770-8506, Japan
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19
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Thilmany P, Evano G. Efficient and Divergent Synthesis of α‐Halogenated Amides and Esters by Double Electrophilic Activation of Ynamides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pierre Thilmany
- Laboratoire de Chimie Organique Service de Chimie et PhysicoChimie Organiques Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique Service de Chimie et PhysicoChimie Organiques Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
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20
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Thilmany P, Evano G. Efficient and Divergent Synthesis of α-Halogenated Amides and Esters by Double Electrophilic Activation of Ynamides. Angew Chem Int Ed Engl 2019; 59:242-246. [PMID: 31637817 DOI: 10.1002/anie.201911722] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Indexed: 11/07/2022]
Abstract
An efficient and modular entry to α-halogenated amides and esters is reported. This reaction is based on an underestimated double electrophilic activation of ynamides sequentially involving highly reactive activated keteniminium and iminium ions. Upon simple reaction with HCl and an electrophilic halogenation reagent in the presence of water or an alcohol, a broad range of ynamides can be transformed, in a highly divergent manner, to α-halo amides and esters with high efficiency and under mild conditions.
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Affiliation(s)
- Pierre Thilmany
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050, Brussels, Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050, Brussels, Belgium
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21
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Maji B. Stereoselective Haliranium, Thiiranium and Seleniranium Ion‐Triggered Friedel–Crafts‐Type Alkylations for Polyene Cyclizations. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900028] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Biswajit Maji
- Department of ChemistryIndira Gandhi National Tribal University Amarkantak – 484886 Madhya Pradesh India
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22
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Affiliation(s)
- Bo Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Tong-De Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xin-Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Mingzhou Shang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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23
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Habert L, Sallio R, Durandetti M, Gosmini C, Gillaizeau I. Zinc Chloride Mediated Synthesis of
3H
‐Oxazol‐2‐one and Pyrrolo‐oxazin‐1‐one from Ynamide. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900428] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Loïc Habert
- Institute of Organic and Analytical Chemistry ICOA UMR 7311 CNRS Université d'Orléans rue de Chartres 45100 Orléans France
| | - Romain Sallio
- Institute of Organic and Analytical Chemistry ICOA UMR 7311 CNRS Université d'Orléans rue de Chartres 45100 Orléans France
| | - Muriel Durandetti
- Normandie Univ, UNIROUEN NSA Rouen, CNRS, COBRA (UMR 6014& FR 3038) 76000 Rouen France
| | - Corinne Gosmini
- Laboratoire de Chimie Moléculaire CNRS, Ecole polytechnique, IPParis 91128 Palaiseau France
| | - Isabelle Gillaizeau
- Institute of Organic and Analytical Chemistry ICOA UMR 7311 CNRS Université d'Orléans rue de Chartres 45100 Orléans France
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24
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Su R, Yang XH, Hu M, Wang QA, Li JH. Annulation Cascades of N-Allyl- N-((2-bromoaryl)ethynyl)amides Involving C-H Functionalization. Org Lett 2019; 21:2786-2789. [PMID: 30939026 DOI: 10.1021/acs.orglett.9b00740] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An annulation cascades of N-allyl- N-((2-bromoaryl)ethynyl)amides with terminal alkynes or 1,3-dicarbonyls involving C-H functionalization for producing 2,3-functionalized indoles has been first developed by means of Cu catalysis. The method is enabled by the formation of the ketenimine intermediates to deliver 2,3-disubstituted indoles through a sequence of aza-Claisen rearrangement, C-H functionalization, Ullmann C-N coupling, and cyclization.
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Affiliation(s)
- Rongkui Su
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China.,Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, School of Metallurgy and Environment , Central South University , Changsha 410083 , China
| | - Xu-Heng Yang
- College of Arts and Sciences , National University of Defense Technology , Changsha 410073 , China
| | - Ming Hu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
| | - Qiu-An Wang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
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25
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Lin H, Chiang T, Wu R, Chang Y, Wang H, Liu S, Yeh MP. Synthesis of Halogenated Cyclic Enamines from Cyclic
N‐
2‐En‐4‐ynyl‐
N
‐1‐ynylamides and
N
‐Propargyl‐
N
‐1‐ynylamides via a Tandem Iron Halide Promoted N‐to‐C Shift‐Aza‐Prins Cyclization Sequence. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hsin‐Hui Lin
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Tai‐Ching Chiang
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Rong‐Xuan Wu
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Yi‐Mei Chang
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Hao‐Wen Wang
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Ssu‐Ting Liu
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
| | - Ming‐Chang P. Yeh
- Department of ChemistryNational Taiwan Normal University 88 Ding-Jou Road, Sec. 4 Taipei 11677 Taiwan, R.O.C
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26
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Li L, Zhu XQ, Zhang YQ, Bu HZ, Yuan P, Chen J, Su J, Deng X, Ye LW. Metal-free alkene carbooxygenation following tandem intramolecular alkoxylation/Claisen rearrangement: stereocontrolled access to bridged [4.2.1] lactones. Chem Sci 2019; 10:3123-3129. [PMID: 30996895 PMCID: PMC6429610 DOI: 10.1039/c9sc00079h] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 01/23/2019] [Indexed: 12/14/2022] Open
Abstract
Alkene carbooxygenation has attracted considerable attention over the past few decades as this approach provides an efficient access to various oxygen-containing molecules, especially the valuable O-heterocycles. However, examples of catalytic alkene carbooxygenation via a direct C-O cleavage are quite scarce, and the C-O cleavage in these cases is invariably initiated by transition metal-catalyzed oxidative addition. We report here a novel Brønsted acid-catalyzed intramolecular alkoxylation-initiated tandem sequence, which represents the first metal-free intramolecular alkoxylation/Claisen rearrangement. Significantly, an unprecedented Brønsted acid-catalyzed intramolecular alkene insertion into the C-O bond via a carbocation pathway was discovered. This method allows the stereocontrolled synthesis of valuable indole-fused bridged [4.2.1] lactones, providing ready access to biologically relevant scaffolds in a single synthetic step from an acyclic precursor. Moreover, such an asymmetric cascade cyclization has also been realized by employing a traceless chiral directing group. Control experiments favor the feasibility of a carbocation pathway for the process. In addition, biological tests showed that some of these newly synthesized indole-fused lactones exhibited their bioactivity as antitumor agents against different breast cancer cells, melanoma cells, and esophageal cancer cells.
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Affiliation(s)
- Long Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces , Key Laboratory for Chemical Biology of Fujian Province , College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China .
| | - Xin-Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces , Key Laboratory for Chemical Biology of Fujian Province , College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China .
| | - Ying-Qi Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces , Key Laboratory for Chemical Biology of Fujian Province , College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China .
| | - Hao-Zhen Bu
- State Key Laboratory of Physical Chemistry of Solid Surfaces , Key Laboratory for Chemical Biology of Fujian Province , College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China .
| | - Peng Yuan
- State Key Laboratory of Physical Chemistry of Solid Surfaces , Key Laboratory for Chemical Biology of Fujian Province , College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China .
| | - Jinyu Chen
- State Key Laboratory of Cellular Stress Biology , School of Life Sciences , Xiamen University , Xiamen , Fujian 361102 , China
| | - Jingyi Su
- State Key Laboratory of Cellular Stress Biology , School of Life Sciences , Xiamen University , Xiamen , Fujian 361102 , China
| | - Xianming Deng
- State Key Laboratory of Cellular Stress Biology , School of Life Sciences , Xiamen University , Xiamen , Fujian 361102 , China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces , Key Laboratory for Chemical Biology of Fujian Province , College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China .
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , Shanghai 200032 , China
- State Key Laboratory of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China
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27
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Dutta S, Mallick RK, Prasad R, Gandon V, Sahoo AK. Alkyne Versus Ynamide Reactivity: Regioselective Radical Cyclization of Yne‐Ynamides. Angew Chem Int Ed Engl 2019; 58:2289-2294. [DOI: 10.1002/anie.201811947] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 12/12/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Shubham Dutta
- School of ChemistryUniversity of Hyderabad Hyderabad India
| | | | - Rangu Prasad
- School of ChemistryUniversity of Hyderabad Hyderabad India
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182Université Paris-Sud, Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168Ecole PolytechniqueUniversité Paris-Saclay route de Saclay 91128 Palaiseau cedex France
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28
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Nursahedova SK, Ryabukhin DS, Muzalevskiy VM, Iakovenko RO, Boyarskaya IA, Starova GL, Nenajdenko VG, Vasilyev AV. Reactions of Trifluoroacetyl Alkynes Under Electrophilic Activation with Brønsted Acids or Acidic Zeolites. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Selbi K. Nursahedova
- Department of Chemistry; Saint Petersburg State Forest Technical University; Institutsky per., 5 194021 Saint Petersburg Russia
| | - Dmitry S. Ryabukhin
- Department of Chemistry; Saint Petersburg State Forest Technical University; Institutsky per., 5 194021 Saint Petersburg Russia
| | - Vasily M. Muzalevskiy
- Department of Chemistry; Lomonosov Moscow State University; Leninskie Gory, 1 119899 Moscow Russia
| | - Roman O. Iakovenko
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab., 7/9 199034 Saint Petersburg Russia
| | - Irina A. Boyarskaya
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab., 7/9 199034 Saint Petersburg Russia
| | - Galina L. Starova
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab., 7/9 199034 Saint Petersburg Russia
| | - Valentine G. Nenajdenko
- Department of Chemistry; Lomonosov Moscow State University; Leninskie Gory, 1 119899 Moscow Russia
| | - Aleksander V. Vasilyev
- Department of Chemistry; Saint Petersburg State Forest Technical University; Institutsky per., 5 194021 Saint Petersburg Russia
- Department of Organic Chemistry; Institute of Chemistry; Saint Petersburg State University; Universitetskaya nab., 7/9 199034 Saint Petersburg Russia
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29
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Dutta S, Mallick RK, Prasad R, Gandon V, Sahoo AK. Alkyne Versus Ynamide Reactivity: Regioselective Radical Cyclization of Yne-Ynamides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201811947] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shubham Dutta
- School of Chemistry; University of Hyderabad; Hyderabad India
| | | | - Rangu Prasad
- School of Chemistry; University of Hyderabad; Hyderabad India
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168; Ecole Polytechnique; Université Paris-Saclay; route de Saclay 91128 Palaiseau cedex France
| | - Akhila K. Sahoo
- School of Chemistry; University of Hyderabad; Hyderabad India
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30
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Li SS, Lv X, Ren D, Shao CL, Liu Q, Xiao J. Redox-triggered cascade dearomative cyclizations enabled by hexafluoroisopropanol. Chem Sci 2018; 9:8253-8259. [PMID: 30542574 PMCID: PMC6240893 DOI: 10.1039/c8sc03339k] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 08/31/2018] [Indexed: 12/14/2022] Open
Abstract
An unprecedented cascade dearomative cyclization through hydrogen-bonding-assisted hydride transfer is realized. The aggregate effect of HFIP enables the rapid buildup of polycyclic amines directly from phenols and o-aminobenzaldehydes via a cascade dearomatization/rearomatization/dearomatization sequence. This unique transformation addressed the drawbacks of hydride transfer-involved redox-neutral reactions.
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Affiliation(s)
- Shuai-Shuai Li
- Shandong Province Key Laboratory of Applied Mycology , College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao , 266109 , China .
| | - Xintong Lv
- Shandong Province Key Laboratory of Applied Mycology , College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao , 266109 , China .
| | - Didi Ren
- Shandong Province Key Laboratory of Applied Mycology , College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao , 266109 , China .
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs , The Ministry of Education of China , School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , China
| | - Qing Liu
- College of Chemical and Environmental Engineering , Shandong University of Science and Technology , Qingdao 266590 , China
| | - Jian Xiao
- Shandong Province Key Laboratory of Applied Mycology , College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao , 266109 , China .
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31
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Brutiu BR, Bubeneck WA, Cvetkovic O, Li J, Maulide N. On the formation of seven-membered rings by arene-ynamide cyclization. MONATSHEFTE FUR CHEMIE 2018; 150:3-10. [PMID: 30662090 PMCID: PMC6320749 DOI: 10.1007/s00706-018-2320-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 10/10/2018] [Indexed: 12/31/2022]
Abstract
ABSTRACT A Brønsted acid-catalyzed selective arene-ynamide cyclization is described. This reaction proceeds via a keteniminium intermediate and enables the preparation of seven-membered ring enamide products. Mechanistic studies uncover an unusual product inhibition behavior. GRAPHICAL ABSTRACT
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Affiliation(s)
- Bogdan R. Brutiu
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Wilhelm Andrei Bubeneck
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Olivera Cvetkovic
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Jing Li
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
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32
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Wen H, Cao W, Liu Y, Wang L, Chen P, Tang Y. Metal-Free [2 + 2 + 2] Cycloaddition of Ynamide-Nitriles with Ynamides: A Highly Regio- and Chemoselective Synthesis of δ-Carboline Derivatives. J Org Chem 2018; 83:13308-13324. [PMID: 30353730 DOI: 10.1021/acs.joc.8b02112] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A metal-free formal [2 + 2 + 2] cycloaddition of functionalized ynamide-nitriles with ynamides is disclosed which offers highly efficient access to polysubstituted δ-carboline derivatives under the mediation of TfOH. This strategy is highly regioselective and chemoselective and displays mild conditions, high yields, and efficiency (within 1 min) in addition to substrates scopes (56 examples).
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Affiliation(s)
- Hao Wen
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao , 266003 , People's Republic of China
| | - Wei Cao
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao , 266003 , People's Republic of China
| | - Yu Liu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao , 266003 , People's Republic of China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao 266109 , People's Republic of China
| | - Ping Chen
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao , 266003 , People's Republic of China
| | - Yu Tang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao , 266003 , People's Republic of China.,Laboratory for Marine Drugs and Bioproducts Qingdao National Laboratory for Marine Science and Technology , Qingdao 266237 , People's Republic of China
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33
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Affiliation(s)
- Wanxiang Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Jianwei Sun
- Department of Chemistry, the Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, P. R. China
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34
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Kolleth A, Müller S, Lumbroso A, Tanriver G, Catak S, Sulzer-Mossé S, De Mesmaeker A. Access to 3-aminobenzothiophenes and 3-aminothiophenes fused to 5-membered heteroaromatic rings through 6π-electrocyclization reaction of keteniminium salts. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.06.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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35
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Su X, Chen B, Wang S, Chen H, Chen C. Atom- and Step-Efficient Construction of Five-Membered Carbocycles with Alkenes and Alkynes Catalyzed by AgSbF6. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02448] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiang Su
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education, MOE), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Bifeng Chen
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education, MOE), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Shaohong Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences. Beijing, 100190, China
| | - Hui Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences. Beijing, 100190, China
| | - Chao Chen
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education, MOE), Department of Chemistry, Tsinghua University, Beijing, 100084, China
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36
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Marien N, Reddy BN, De Vleeschouwer F, Goderis S, Van Hecke K, Verniest G. Metal-Free Cyclization of ortho
-Nitroaryl Ynamides and Ynamines towards Spiropseudoindoxyls. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800340] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Niels Marien
- Research Group of Organic Chemistry (ORGC), Department of Chemistry and Department of Bio-engineering Sciences; Faculty of Science and Bio-engineering Sciences; Vrije Universiteit Brussel (VUB); Pleinlaan 2 1050 Brussels Belgium
| | - B. Narendraprasad Reddy
- Research Group of Organic Chemistry (ORGC), Department of Chemistry and Department of Bio-engineering Sciences; Faculty of Science and Bio-engineering Sciences; Vrije Universiteit Brussel (VUB); Pleinlaan 2 1050 Brussels Belgium
| | | | - Steven Goderis
- Research Group of Analytical, Environmental and Geochemistry (AMGC); VUB; Belgium
| | - Kristof Van Hecke
- Department of Chemistry; Ghent University; Krijgslaan 281-S3 9000 Ghent Belgium
| | - Guido Verniest
- Research Group of Organic Chemistry (ORGC), Department of Chemistry and Department of Bio-engineering Sciences; Faculty of Science and Bio-engineering Sciences; Vrije Universiteit Brussel (VUB); Pleinlaan 2 1050 Brussels Belgium
- Janssen Pharmaceutical Companies of Johnson & Johnson, PDMS-AD; Turnhoutseweg 30 2340 Beerse Belgium
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37
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Marien N, Reddy BN, De Vleeschouwer F, Goderis S, Van Hecke K, Verniest G. Metal-Free Cyclization of ortho-Nitroaryl Ynamides and Ynamines towards Spiropseudoindoxyls. Angew Chem Int Ed Engl 2018; 57:5660-5664. [PMID: 29570239 DOI: 10.1002/anie.201800340] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/21/2018] [Indexed: 11/11/2022]
Abstract
An efficient metal-free cascade reaction between 1-dibromovinyl-2-nitro-substituted arenes and secondary amines results in the formation of polycyclic pseudoindoxyls in a single step. The reaction mechanism leading to these fused ring systems was investigated, and is believed to involve the initial formation of nitroarylated ynamines/ynamides. These intermediates cycloisomerize towards N-alkenyl-tethered 2-aminoisatogens via a carbene intermediate as demonstrated by QTAIM (quantum theory of atoms in molecules) and ELF (electron localization function) analysis. A subsequent intramolecular dipolar cycloaddition afforded the title compounds.
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Affiliation(s)
- Niels Marien
- Research Group of Organic Chemistry (ORGC), Department of Chemistry and Department of Bio-engineering Sciences, Faculty of Science and Bio-engineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
| | - B Narendraprasad Reddy
- Research Group of Organic Chemistry (ORGC), Department of Chemistry and Department of Bio-engineering Sciences, Faculty of Science and Bio-engineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium
| | | | - Steven Goderis
- Research Group of Analytical, Environmental and Geochemistry (AMGC), VUB, Belgium
| | - Kristof Van Hecke
- Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000, Ghent, Belgium
| | - Guido Verniest
- Research Group of Organic Chemistry (ORGC), Department of Chemistry and Department of Bio-engineering Sciences, Faculty of Science and Bio-engineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050, Brussels, Belgium.,Janssen Pharmaceutical Companies of Johnson & Johnson, PDMS-AD, Turnhoutseweg 30, 2340, Beerse, Belgium
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38
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Idiris FIM, Majesté CE, Craven GB, Jones CR. Intramolecular hydride transfer onto arynes: redox-neutral and transition metal-free C(sp 3)-H functionalization of amines. Chem Sci 2018; 9:2873-2878. [PMID: 29732071 PMCID: PMC5914459 DOI: 10.1039/c8sc00181b] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 02/07/2018] [Indexed: 02/01/2023] Open
Abstract
Transition metal-free intramolecular hydride transfer onto arynes is reported for the first time. This unique transformation is utilized in redox-neutral intermolecular α-functionalization reactions of different tertiary amines, generating C(sp3)-C(sp3/sp2/sp) bonds in a single synthetic operation. Deuterium labeling studies support initial cleavage of the α-C-H bond via intramolecular 1,5-hydride transfer onto the aryne, which leads to activation of a range of integrated pronucleophiles and ultimately affords a new approach to cross-dehydrogenative coupling reactions which utilize aryne intermediates.
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Affiliation(s)
- Fahima I M Idiris
- School of Biological and Chemical Sciences , Queen Mary University of London , Mile End Road , London , E1 4NS , UK .
| | - Cécile E Majesté
- School of Biological and Chemical Sciences , Queen Mary University of London , Mile End Road , London , E1 4NS , UK .
| | - Gregory B Craven
- School of Biological and Chemical Sciences , Queen Mary University of London , Mile End Road , London , E1 4NS , UK .
| | - Christopher R Jones
- School of Biological and Chemical Sciences , Queen Mary University of London , Mile End Road , London , E1 4NS , UK .
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39
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Theunissen C, Métayer B, Lecomte M, Henry N, Chan HC, Compain G, Gérard P, Bachmann C, Mokhtari N, Marrot J, Martin-Mingot A, Thibaudeau S, Evano G. Cationic polycyclization of ynamides: building up molecular complexity. Org Biomol Chem 2018; 15:4399-4416. [PMID: 28485455 DOI: 10.1039/c7ob00850c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polycyclization reactions are among the most efficient synthetic tools for the synthesis of complex, polycyclic molecules in a single operation from simple starting materials. We report in this manuscript a full account on the discovery and development of a novel cationic polycyclization from readily available ynamides. Simple activation of these building blocks under acidic conditions enables the generation of highly reactive activated keteniminium ions, which triggers an unprecedented cationic polycyclization yielding highly substituted polycyclic nitrogen heterocycles possessing up to seven fused cycles and three contiguous stereocenters.
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Affiliation(s)
- Cédric Theunissen
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium.
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40
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Li H, Li X, Zhao Z, Ma T, Sun C, Yang B. Intermolecular iodofunctionalization of allenamides with indoles, pyrroles, and furans: synthesis of iodine-substituted Z-enamides. Chem Commun (Camb) 2018; 52:10167-70. [PMID: 27461389 DOI: 10.1039/c6cc05046h] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new method was developed to synthesize iodine-substituted Z-enamides through N-iodosuccinimide-mediated intermolecular iodofunctionalization of allenamides with indoles, pyrroles, and furans. These reactions proceed rapidly and tolerate a broad scope of substrates. The conjugated sulfimide ion species probably acts as the key intermediate.
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Affiliation(s)
- Honghe Li
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
| | - Xiaoxiao Li
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
| | - Zhigang Zhao
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
| | - Ting Ma
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
| | - Chenyang Sun
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
| | - Bowen Yang
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
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41
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Zhao Y, Wang C, Hu Y, Wan B. Brønsted acid-catalyzed formal [5+2+1] cycloaddition of ynamides and isoxazoles with water: access to oxygen-bridged tetrahydro-1,4-oxazepines. Chem Commun (Camb) 2018; 54:3963-3966. [DOI: 10.1039/c8cc00881g] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The unique property of the Brønsted acid, as well as introducing a small amount of water, shows distinct chemoselectivity from the corresponding gold-catalyzed cycloadditions.
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Affiliation(s)
- Yingying Zhao
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
- University of Chinese Academy of Sciences
| | - Chunxiang Wang
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Yancheng Hu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Boshun Wan
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
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42
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Habert L, Retailleau P, Gillaizeau I. Rapid synthesis of 3-amino isocoumarin derivatives from ynamides. Org Biomol Chem 2018; 16:7351-7355. [DOI: 10.1039/c8ob02305k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A novel and efficient fast synthesis of 3-amino isocoumarins in good to excellent yields is reported.
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Affiliation(s)
- Loïc Habert
- Institute of Organic and Analytical Chemistry
- ICOA UMR 7311 CNRS
- Université d'Orléans
- Pôle de chimie
- 45100 Orléans
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles
- CNRS
- 91198 Gif-sur-Yvette Cedex
- France
| | - Isabelle Gillaizeau
- Institute of Organic and Analytical Chemistry
- ICOA UMR 7311 CNRS
- Université d'Orléans
- Pôle de chimie
- 45100 Orléans
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43
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Xu L, Yang P, Wang L. Direct functionalization of benzylic and non-benzylic C(sp3)–H bonds via keteniminium ion initiated cascade [1,5]-hydrogen transfer/cyclization. Org Chem Front 2018. [DOI: 10.1039/c8qo00314a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Keteniminium intermediates generated in situ initiate the cascade [1,5]-hydride transfer/cyclization for the direct functionalization of benzylic and non-benzylic C(sp3)–H bonds.
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Affiliation(s)
- Lubin Xu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Pengfei Yang
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology
- Jinan
- China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
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44
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Baldassari LL, de la Torre A, Li J, Lüdtke DS, Maulide N. Ynamide Preactivation Allows a Regio- and Stereoselective Synthesis of α,β-Disubstituted Enamides. Angew Chem Int Ed Engl 2017; 56:15723-15727. [PMID: 29032598 DOI: 10.1002/anie.201709128] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Indexed: 12/13/2022]
Abstract
A novel ynamide preactivation strategy enables the use of otherwise incompatible reagents and allows preparation of α,β-disubstituted enamides with high regio- and stereoselectivity. Mechanistic analysis reveals the intermediacy of a triflate-bound intermediate as a solution-stable, effective keteniminium reservoir, whilst still allowing subsequent addition of organometallic reagents.
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Affiliation(s)
- Lucas L Baldassari
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970, Porto Alegre, RS, Brazil
| | - Aurélien de la Torre
- Institute of Organic Chemistry, University of Vienna, Währinger Strassee 38, 1090, Vienna, Austria
| | - Jing Li
- Institute of Organic Chemistry, University of Vienna, Währinger Strassee 38, 1090, Vienna, Austria
| | - Diogo S Lüdtke
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970, Porto Alegre, RS, Brazil
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strassee 38, 1090, Vienna, Austria
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45
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Baldassari LL, de la Torre A, Li J, Lüdtke DS, Maulide N. Regio- und stereoselektive Synthese α,β-disubstituierter Enamide durch Voraktivierung von Inamiden. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709128] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Lucas L. Baldassari
- Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves 9500 91501-970 Porto Alegre RS Brasilien
| | - Aurélien de la Torre
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Jing Li
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Diogo S. Lüdtke
- Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves 9500 91501-970 Porto Alegre RS Brasilien
| | - Nuno Maulide
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
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46
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Mallick RK, Prabagar B, Sahoo AK. Regioselective Synthesis of 2,4,5-Trisubstituted Oxazoles and Ketene Aminals via Hydroamidation and Iodo-Imidation of Ynamides. J Org Chem 2017; 82:10583-10594. [DOI: 10.1021/acs.joc.7b02124] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - B. Prabagar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Akhila K. Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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47
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Beltran F, Fabre I, Ciofini I, Miesch L. Direct Spirocyclization from Keto-sulfonamides: An Approach to Azaspiro Compounds. Org Lett 2017; 19:5042-5045. [PMID: 28929765 DOI: 10.1021/acs.orglett.7b02216] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Spontaneous spirocyclization of keto-sulfonamides via ynamides through a one-pot process is presented. Push-pull ynamides were obtained through Michael addition/elimination without Cu. The obtained azaspiro compounds are building blocks for indole alkaloids. Theoretical studies provide insights into the mechanism of the formal Conia-ene reaction.
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Affiliation(s)
- Frédéric Beltran
- Laboratoire de Chimie Organique Synthétique, Institut de Chimie, CNRS-UdS UMR 7177 , 4, rue Blaise Pascal CS 90032, 67081 Strasbourg, France
| | - Indira Fabre
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP) , 75005 Paris, France.,Département de chimie, École Normale Supérieure, PSL Research University, Sorbonne Universités, UPMC Univ. , Paris 06, CNRS, 75005 Paris, France
| | - Ilaria Ciofini
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP) , 75005 Paris, France
| | - Laurence Miesch
- Laboratoire de Chimie Organique Synthétique, Institut de Chimie, CNRS-UdS UMR 7177 , 4, rue Blaise Pascal CS 90032, 67081 Strasbourg, France
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48
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Zhao Q, Gagosz F. Synthesis of Allenamides and Structurally Related Compounds by a Gold-Catalyzed Hydride Shift Process. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700615] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Qing Zhao
- Laboratoire de Synthèse Organique; UMR 7652 CNRS/Ecole Polytechnique; Route de Saclay 91128 Palaiseau France
- Department of Chemistry and Biomolecular Sciences; University of Ottawa; K1 N 6 N5 Ottawa Canada
| | - Fabien Gagosz
- Laboratoire de Synthèse Organique; UMR 7652 CNRS/Ecole Polytechnique; Route de Saclay 91128 Palaiseau France
- Department of Chemistry and Biomolecular Sciences; University of Ottawa; K1 N 6 N5 Ottawa Canada
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49
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Romero E, Minard C, Benchekroun M, Ventre S, Retailleau P, Dodd RH, Cariou K. Base-Mediated Generation of Ketenimines from Ynamides: Direct Access to Azetidinimines by an Imino-Staudinger Synthesis. Chemistry 2017. [DOI: 10.1002/chem.201702545] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Eugénie Romero
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Corinne Minard
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Mohamed Benchekroun
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Sandrine Ventre
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Robert H. Dodd
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Kevin Cariou
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
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50
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Synthesis of 4-membered ring alkaloid analogues via intramolecular [2+2] cycloaddition involving keteniminium salt intermediates. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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